body {
    font-family: "微软雅黑", sans-serif;
    max-width: 800px;
    margin: 20px auto;
    padding: 0 20px;
    background-color: #f5f5f5;
}
h1 {
    color: #2d3748;
    text-align: center;
}
p {
    color: #4a5568;
    line-height: 1.6;
}
img {
    display: block;
    width: 100px;
    margin: 20px auto;
}
button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    background-color: #2b6cb0;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
button:hover {
    background-color: #2c5282;
}